66654834 has 16 divisors (see below), whose sum is σ = 136913088. Its totient is φ = 21617712.

The previous prime is 66654829. The next prime is 66654857. The reversal of 66654834 is 43845666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149902 + ... + 150345.

It is an arithmetic number, because the mean of its divisors is an integer number (8557068).

Almost surely, 2^66654834 is an apocalyptic number.

66654834 is an abundant number, since it is smaller than the sum of its proper divisors (70258254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66654834 is a wasteful number, since it uses less digits than its factorization.

66654834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300289.

The product of its digits is 414720, while the sum is 42.

The square root of 66654834 is about 8164.2411772314. The cubic root of 66654834 is about 405.4561420625.

The spelling of 66654834 in words is "sixty-six million, six hundred fifty-four thousand, eight hundred thirty-four".